* * Refactor scaling configuration
* Support sharding sphere jdbc as data source

* Fixed naming

* Fixed spelling

* Update scaling usage document.

* Add data consistency checker function.

* Add unit tests

* Add PostgreSQLDataConsistencyChecker

Co-authored-by: qiulu3 <Lucas209910>

* adjust structure

* rename files

* adjust references

* refactor shardingsphere-jdbc-spring

* refactor shardingsphere-jdbc-spring

* refactor shardingsphere-proxy

* refactor scaling

* refactor dist

* fix scaling test

* Scaling job Breakpoint resume ability.

* update shardingsphere-orchestration-repository-zookeeper-curator dependency

Co-authored-by: qiulu3 <Lucas209910>

Co-authored-by: NLucas <qiulu3@jd.com>

* rename sharding-orchestration-core to shardingsphere-orchestration-core

* rename sharding-orchestration-center to shardingsphere-orchestration-center

* Rename sharding-orchestration to shardingsphere-orchestration

* fix dependency error

* rename sharding-core to shardingsphere-sharding

* rename sharding-core to shardingsphere-sharding

* rename encrypt-core to shardingsphere-encrypt

* rename master-slave-core to shardingsphere-master-slave

* rename shadow-core to shardingsphere-shadow

* Add shardingsphere-features module

* Rename sharding-scaling to shardingsphere-scaling

* rename package from org.apache.shardingsphere.shardingscaling to org.apache.shardingsphere.scaling

* fix test cases

* Refactor orchestration-core

* modify sharding-jdbc-orchestration

* modify sharding-proxy-common

* modify proxy-backend&sharding-spring

* polish a checkstyle for xml

* fix parent pom ref

* polish pom referred orchestration

* modify a classname

* Remove mysql-jdbc dependency in sharding-scaling-core module

* Remove unused README.md in source code

* Add Getter to ResponseContent

* update readme

* code format for pom

* code format for bootstrap

* code format for bootstrap

* code format for core

* code format for mysql

* code format for pg

* Move scaling http codes from core to bootstrap.

* Fix duplicate copyright

* Add datasources's connections check before start scaling job

* update config.json

* Add blank line

* Refactore DataRecord

* Remove full table name from DataRecord

* Send placeholder record if be filtered

* Support mapping table name

* Load source configuration from sharding proxy yaml configuration

* Skip test

* Change start job interface

* For checkstyle

* Commit missing changed

* Use Hikari replace dbcp2

* Remove debug log

* Cache data source

* Make DataSourceFactory as not static class

* #3256 Provider Scaling out Interface-Initialize netty related classes
* #3256 Provider Scaling out Interface-change request apis

* Refactor HistoryDataSyncTaskGroup, move spilt logic from jdbcReader to HistoryDataSyncTaskGroup